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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#542381 | #4563. Radio Towers | Wansur | 0 | 48ms | 13244kb | C++23 | 1.4kb | 2024-09-01 00:58:37 | 2024-09-01 00:58:37 |
Judging History
answer
#include "towers.h"
#include <bits/stdc++.h>
#define ent '\n'
using namespace std;
typedef long long ll;
const int maxn = 1e5 + 12;
int dp[maxn], a[maxn];
int p[20][maxn], lg[maxn];
vector<int> ord;
int n, d;
int get(int l, int r){
if(l > r) return 0;
int k = lg[r - l + 1];
return max(p[k][l], p[k][r - (1 << k) + 1]);
}
void init(int N, std::vector<int> H) {
n = N;
for(int i=1;i<=n;i++){
dp[i] = 2e9;
a[i] = p[0][i] = H[i - 1];
if(i > 1) lg[i] = lg[i / 2] + 1;
}
for(int k=1;k<20;k++){
for(int i=1;i + (1 << k) - 1 <= n;i++){
p[k][i] = max(p[k-1][i], p[k-1][i + (1 << (k - 1))]);
}
}
stack<int> s;
for(int i=1;i<=n;i++){
while(s.size() && a[s.top()] > a[i]){
s.pop();
}
if(s.size()){
dp[i] = get(s.top() + 1, i - 1);
}
s.push(i);
}
while(s.size()) s.pop();
for(int i=n;i;i--){
while(s.size() && a[s.top()] > a[i]){
s.pop();
}
if(s.size()){
dp[i] = min(dp[i], get(i + 1, s.top() - 1));
}
s.push(i);
if(dp[i] != 2e9){
ord.push_back(dp[i] - a[i]);
}
}
sort(ord.begin(), ord.end());
}
int max_towers(int l, int r, int D) {
return upper_bound(ord.begin(), ord.end(), D) - ord.begin() - 1;
}
Details
Tip: Click on the bar to expand more detailed information
Subtask #1:
score: 0
Wrong Answer
Test #1:
score: 0
Wrong Answer
time: 22ms
memory: 12956kb
input:
59640 49885 57346 58504 87383 113182 129676 204090 205404 259925 276583 300332 324014 333675 359377 364049 408489 414852 428310 438038 440113 458193 554789 643468 666525 683112 690791 707313 720088 741028 748785 789826 796576 800966 832867 851750 861044 862283 900756 926925 939560 955678 965636 9740...
output:
59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 59637 ...
result:
wrong answer 3rd lines differ - expected: '1', found: '59637'
Subtask #2:
score: 0
Wrong Answer
Test #8:
score: 0
Wrong Answer
time: 1ms
memory: 5856kb
input:
425 753881706 405729786 890889563 29736246 598281970 208352067 357783003 663497023 178397034 4832890 562140755 510307001 354540290 538848551 436879256 86659033 42928516 24145404 749159097 118423198 506851985 204895765 719719998 726244368 991372008 681703480 799303017 657138050 88278945 417801236 260...
output:
293
result:
wrong answer 3rd lines differ - expected: '13', found: '293'
Subtask #3:
score: 0
Skipped
Dependency #2:
0%
Subtask #4:
score: 0
Wrong Answer
Test #65:
score: 0
Wrong Answer
time: 48ms
memory: 13244kb
input:
99308 491693640 24020487 317364185 726230755 737284540 951143270 709116045 641023337 360629062 964879440 47884022 532494780 803629825 635450854 688041998 573937055 113198481 191311841 929603572 636688 598629732 895342035 396521271 619919754 716589045 657789547 373121546 866402108 609316614 60046511 ...
output:
66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 66297 ...
result:
wrong answer 3rd lines differ - expected: '11903', found: '66297'
Subtask #5:
score: 0
Wrong Answer
Test #86:
score: 0
Wrong Answer
time: 10ms
memory: 12792kb
input:
23881 605288257 422163932 155875880 339929874 76049859 196344969 958160745 767945284 469191956 997116006 387749577 15911341 920437918 367576975 800789357 351557615 283723284 369507452 841548133 643412903 309731505 256549694 370065644 699518122 559017597 347646657 469353381 575240521 501893001 454519...
output:
16683 16817 23730 18850 18653 16547 22102 17205 21868 17959 19002 16403 19282 21111 18520 17415 16220 16646 16086 21120 17559 16824 16578 19131 23416 21851 18230 21907 17653 18980 18914 18890 20738 23095 18062 20875 16175 16913 21940 18000 16679 19128 22602 17326 20929 22986 17279 16861 16644 17804 ...
result:
wrong answer 3rd lines differ - expected: '7197', found: '16683'
Subtask #6:
score: 0
Skipped
Dependency #4:
0%
Subtask #7:
score: 0
Skipped
Dependency #1:
0%